Answer:
8
Step-by-step explanation:
12=2x-4
12+4 = 2x
16 = 2x
16/2 =x
x =8
check
d(x) = 2(8)-4
=16-4
=12
A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5
points. If x is the number of 3-point questions and y is the number of 5-point guestions, the system shown
represents this situation
x+y= 24
3x + 5y = 100
What does the solution of this system indicate about the questions on the test?
The test contains 4 three-point questions and 20 five-point questions.
The test contains 10 three-point questions and 14 five-point questions.
The test contains 14 three-point questions and 10 five-point questions
The test contains 20 three-point questions and 8 five-point questions.
Answer:
10 three point questions, 14 five point questions
Step-by-step explanation:
trial and error
Directed line segment PT has endpoints whose
coordinates are P(-2, 1) and 1(4,7). Determine
the coordinates of pointſ that divides the segment
in the ratio 2 to 1.
Answer:
(2 , 5)
Step-by-step explanation:
point (x,y) that divides the segment PI in the ratio 2 to 1
PD=4 - (-2) = 6 PE/ED=2/1 PE=2ED PE+ED=6 3ED=6 ED=2 PE=4
coordinate of E (2,1) .... 2 is x coordinate of E
DI=7-1=6 DF/FI=2/1 DF=4
coordinate of F (4,5) .... .... 5 is y coordinate of E
CF // PD PC/CI=DF/FI=2/1
C (2,5)
Coordinates of the point intersecting segment PT in the ratio of 2 : 1 will be (2, 5).
Given in the question,
Segment PT with endpoints P(-2, 1) and T(4, 7).Point (h, k) divides the segment in the ratio of 2 : 1.If the endpoints of a segment PQ have been given as[tex]P(x_1,y_1)[/tex] and [tex]Q(x_2,y_2)[/tex] and a point [tex](h,k)[/tex] divides this segment in the ratio of m : n,
[tex]h=\frac{mx_2+nx_1}{m+n}[/tex]
[tex]k=\frac{my_2+ny_1}{m+n}[/tex]
If the extreme ends of a segment PT are [tex]P(-2,1)[/tex] and [tex]T(4,7)[/tex] and a point (h, k) divides this segment in ratio of 2 : 1,
[tex]h=\frac{2(4)+1(-2)}{2+1}[/tex]
[tex]h=2[/tex]
[tex]k=\frac{2(7)+1(1)}{2+1}[/tex]
[tex]k=5[/tex]
Therefore, coordinates of the point intersecting segment PT in the ratio of 2 : 1 will be (2, 5).
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can someone answer the question plz?
Answer:
49π cm²
Step-by-step explanation:
The area (A) of a circle is calculated as
A = πr² ( r is the radius )
Here diameter = 14, so r = 14 ÷ 2 = 7, then
A = π × 7² = 49π cm²
Answer:
49pi cm^2
Step-by-step explanation:
[tex]a = \pi \: {r}^{2} [/tex]
Because the radius is half of the diameter, divide it by 2 to get the radius to place in the formula which is 14 ÷2 = 7
so
A = pi × 7^2
A= pi × 49cm^2
please math question lol asap
Answer:
A mathematical problem is a problem that is amenable to being represented, analyzed, and possibly solved, with the methods of mathematics. This can be a real-world problem, such as computing the orbits of the planets in the solar system, or a problem of a more abstract nature, such as Hilbert's problems
Step-by-step explanation:
Find the slope of the line from a graph. Will give brainliest!!!
Answer:
2/1 or 2
Step-by-step explanation:
to find the slope you have to calculate the rise over run, do this by picking two spots on the line that go thourgh the corner of a square. then count the amount up the is your rise then the lateral movement, the is your run.
this means the answer is 2/1 that can be simplified to 2.
Find the value of x.
64
100
XE
Answer:
i think the answer should be 16
please help! hurry, will mark brainliest
Answer:
123, angles are supplementary
Step-by-step explanation:
m<6 = 57
m<1 = 57 ## Corresponding angles
m<1 + m<2 = 180 ## Same side
180 - 57 = 123
You use beads to make a decision. Of the beads,1/3 are red and 1/4 are blue. The rest are white. What fraction of the beads are red or blue.
Ivy likes to buy trail mix in bulk at her local grocery store. If she paid $5.16 for 1.2 pounds of trail mix, what is the price per pound?
A. $3.96
B. 4.03
C. $4.30
D. $6.19
Answer:Step-by-step explanation:
c。4.3
ddddddddddddddddddddddddddddddd
Ivy likes to buy trail mix in bulk at her local grocery store. If she paid $5.16 for 1.2 pounds of trail mix, the price per pound would be $4.3.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
If she paid $5.16 for 1.2 pounds of trail mix
Cost 1.2 pounds of trail mix = $5.16
Cost per pound of trail mix = $5.16/1.2
= $4.3
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The triangles are congruent. Find the measure of x.
Match up the sides for each triangle using the little marks through the sides
1 to 1, 2 to 2 and 3 to 3
When you do this you see that x corresponds to c on the first triangle.
The 3 angles in a triangle = 180.
Find c by subtracting A and B from 180
C = 180- 29-63 = 88
Now x = c so x = 88
The answer is C. 88
Pure salt is made up of sodium and chloride. Each gram
of salt contains 0.393 g of sodium. About how much
sodium is in 55.7 g of pure salt?
24 g
29 g
9 g
90 g
Answer:
21.8901 g
Step-by-step explanation:
Given that:
1 gram of pure salt contains 0.393 g of sodium
1 gram = 0.393g
Gram of sodium in 55.7g of pure salt will be x
1g = 0.393g
55.7g = x
Cross multiply:
x = 55.7 * 0.393
x = 21.8901
55.7 g of pure salt will contain about 21.8901 g of sodium chloride
5 of 5
Sushil, Alex and Peter share some sweets in
the ratio 4:2:3. Sushil gets 8 more sweets than
Peter. How many sweets does Alex get?
Check
9514 1404 393
Answer:
16
Step-by-step explanation:
If we multiply the numbers by 8, the difference between the first (Sushil) and last (Peter) will be 8.
4 : 2 : 3 = 32 : 16 : 24
This tells us Alex gets 16 sweets.
14. Divided by 137.2
Answer:
0.10204081
Step-by-step explanation:
Answer:u want me 2 divide 14 from 137.2?
Step-by-step explanation:
If so the answer is 9.8
If not tell me the question in the comment section
Don’t get this problem
Answer:
why does it say right twice? ...
pls answer this asap
Answer:
its c or d
Step-by-step explanation:
12 = 3 (g - 1)
Options are:
5
3
-5
-3
Answer:
It's 5.
Step-by-step explanation:
substituting g = 5 into the equation,
12 = 3(5 - 1)
12 = 12
Patrick drives from P to Q at an average speed of 40 mph . His drive back from Q to P is at an average speed of 45 mph and takes two minutes less.
How far, in miles, is it from P to Q?
Answer:
12
Step-by-step explanation:
Find the Y equation of the line
Answer:
Step-by-step explanation:
(-2, 0) (0, 4)
(4 - 0)/(0 + 2) = 4/2 = 2
y - 0 = 2(x + 2)
y = 2x + 4
Estimate by rounding to the nearest ten. Then, find the sum.441+345=?
PLSS HELP ME!! ASAP!! I WILL GIVE YOU BRAINLYEST!!
What is the best estimate of the area of the figure in square inches?
Answer:
86.1372 -------> 86.1 (Nearest Tenths)
86.1372 -------> 86.14 (Nearest Hundreths)
86.1372 --------> 86.137 (Nearest Thousandths)
Step-by-step explanation:
Semicircle: 3.14*[tex]3^{2}[/tex]/2 = 14.1372
Triangle: 4*6 = 24/2 = 12
Rectangle: 10*6 = 60
14.1372 + 12 + 60 = 86.1372
86.1372 -------> 86.1 (Nearest Tenths)
86.1372 -------> 86.14 (Nearest Hundreths)
86.1372 --------> 86.137 (Nearest Thousandths)
Which expression is equivalent to 3k + 5l + 6l + 2k?
A) 8k + 8l
B) 5k + 11l
C) 5k
D) 16
Answer:
B)5k + 11l
Step-by-step explanation:
3k + 5l + 6l + 2k collect like terms
3k + 2k + 5l + 6l
5k + 11l
hope it's helpful ❤❤❤❤
THANK YOU.
The expression is equivalent to the given expression is 5k+11l. Therefore, option B is the correct answer.
What is an equivalent expression?Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.
The given expression is 3k+5l+6l+2k.
Group like terms and simplify, we get
(3k+2k)+(5l+6l)
= 5k+11l
The expression is equivalent to the given expression is 5k+11l. Therefore, option B is the correct answer.
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What is m
A.51
B.129
C.134
D.141
Answer:D 141 because
The value of the internal angle m from the heptagon is given by the equation m = 141°.
What is the sum of a polygon's internal angles?The formula returns the sum of the internal angles of a polygon.
The sum of the internal angles of an n-sided polygon is n = 180° (n - 2), where n is the number of sides = angle in degrees
Given the data,
Let's call the polygon a heptagon.
The polygon has n sides, which equals 7 sides.
Now, n = 180 is the sum of the interior angles of a polygon with n sides ( n - 2 )
7θ = 180 ( 7 - 2 )
7θ = 180 ( 5 )
When we simplify the equation, we obtain 7 = 900°.
A = 900° denotes the sum of the internal angles of the polygon.
And , the value of A = 120° + m° + 148° + 90° + 142° + 130° + 129°
900° = m + 759°
Subtracting 759° on both sides of the equation , we get
m = 141°
Hence , the interior angle ∠B = 141°
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Can y’all help me on question 22?!
Answer:
The answer for question 22 is 40.
-
Step-by-step explanation:
[tex] \frac{8 \: red \: cars}{3 \: blue \: cars} = \frac{x}{15 \: blue \: cars} \\ \\ \frac{3x}{3} = \frac{120}{3} \\ \\ x = 40[/tex]
Two standard number cubes are tossed.
What is the probability of getting a 5 on
the first number cube and an even
number on the other?
Answer:
Step-by-step explanation:
favorable outcomes are 52,54,56
number of favorable outcomes=3
Total=36
P=3/36=1/12
Is 6/2 simplified ? ............
Answer:
No, 3
Step-by-step explanation:
6/2
How many times can 3 go into 6?
Answer is 3 times because 2 x 3 is 6.
Answer:
3/1
Step-by-step explanation:
Find the GCD (or HCF) of numerator and denominator
GCD of 6 and 2 is 2
Divide both the numerator and denominator by the GCD
6 ÷ 2 /2 ÷ 2
Reduced fraction:
3/ 1
Therefore, 6/2 simplified to lowest terms is 3/1.
How do I find the y-intercept of a graph?
Answer:
the y intercept on a graph is the line that goes up and down
Step-by-step explanation:
Step-by-step explanation:
Every point on the y-axis has 0 as its x-coordinate. The y-intercept is the point of intersection of the graph and the y-axis.
To find the y-intercept, let x = 0 in the equation of the graph and solve for y. The value of y is the y-intercept.
For example, what is the y-intercept of
2x + 3y = 6
Let x = 0.
2(0) + 3y = 6
Solve for y.
3y = 6
y = 2
The y-intercept is 2.
Write the word sentence as an inequality
The sum of a number n and 2/3 is no less than 5 1/3.
Answer and you’ll get brainliest answer if correct
Answer:
Step-by-step explanation:
n+2/3 ≥ 5 1/3
there is you answer! :)A piano has 88 keys. Fifty-two of the keys are white.
How many more white keys are there than black keys?
Answer:
36
Step-by-step explanation:
88 - 52
=36
Find the area and perimeter of the figure. I need help on this
Answer:
area=38cm²
perimeter=34cm
Step-by-step explanation:
I found three shapes and got
4·2=8
3·3=9
9·3=21
8+9+21=38cm²
5+6+9+4+3+2+2+3=34
3 + (5 + 4) = 3+ (4 + 5) illustrates which property?
Answer:
Distributive
Step-by-step explanation:
Answer:3(4+5)= 3(4)+3(5)
Step-by-step explanation: